If you are working on a project that requires the use of bolts, it is important to have an understanding of the different dimensions and specifications of these fasteners. In particular, you will need to know what size bolt is required for the job. In order to avoid using the incorrect bolt, you should understand how metric bolt sizes are determined. This article will provide information on m8 bolt dimensions so you can properly select the right bolt for your project.

Metric bolts are often referenced by their ‘M’ size, such as M3, M8, and M12. However, the actual size of a metric bolt is more accurately specified by its diameter, thread pitch, and length dimensions in millimeters. The number 8 in this case refers to the nominal diameter of the bolt shaft, while the number 1 indicates the distance between the threads per unit of length. The final number, 20 in this example, refers to the overall length of the bolt.

In addition to the m8 bolt dimensions, it is also important to consider the type of head the bolt has. The type of head determines what tools can be used to tighten and loosen the bolt. The most common bolt heads are socket, pan, button, and hex head. Socket head bolts are typically used in machine applications where there is a need for high torque loads. Pan head bolts are commonly used in plumbing applications. Button heads are used on bicycles for derailleur and brake caliper mounting. Hex head bolts are used in many different applications, including anchor bolts for seat post and stem assemblies.

Using the correct bolt for the job will help ensure that it is secured correctly and that it can withstand the necessary amount of force. The bolt’s tensile strength is also a critical factor in its selection. The tensile strength of the bolt is measured in pounds per square inch (psi). The higher the psi rating, the stronger the bolt.

The correct diameter of the hole for tapping is another important consideration. Bolts with standard coarse or fine thread pitches require a tap drill size that is slightly larger than the bolt’s nominal diameter. This can be easily calculated by subtracting the thread pitch from the metric bolt diameter. For an M8 bolt with a standard coarse thread pitch of 1.25mm, a drilling depth of 6.75mm is required.

When selecting a bolt for your application, it is also essential to consider whether the bolt will be subjected to shear or tension stresses. Shear stresses occur when the bolt is pulled or clamped from a side, while tension stresses are the result of pulling the bolt from the top.

Metric bolts are typically made of low carbon steel and have a Zinc coating to protect them from corrosion. They can be found in a variety of shapes and finishes, from simple nuts and washers to high-end racing bolts. Some types of metric fasteners can be subjected to very high temperatures, so it is important to check the manufacturer’s specifications to make sure that the bolt can handle this kind of stress. m8 bolt dimensions

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